Neobladder in situ is a way of reconstructing the urinary tract after cystectomy, with the advantages of convenience, aesthetics and a guaranteed quality of life; the disadvantages are mainly the partial loss of function and the tendency to cause complications such as urinary incontinence. Advantages: By cutting and trimming the patient’s intestinal tissues, surgical sutures are made to form an anatomical structure similar to the bladder, thus replacing the bladder, eliminating the need for the patient to catheterize himself on a regular basis, and there is no ileostomy exposed to the skin of the abdominal wall, which improves the quality of life of the patient after the operation. Disadvantages: The use of intestinal tissue that does not have the voluntary contraction function of the bladder can easily cause urinary incontinence; the anastomosis between the bladder and the ureter is prone to stenosis, resulting in hydronephrosis, etc.; as the intestinal tissue does not have the function of resisting ureteral reflux, it is also prone to urinary tract infections, which can result in patients with acute ureteritis and pyelonephritis. Therefore, it is necessary for patients to communicate with their doctors and choose the appropriate surgical method based on their own conditions and life needs.